Explore professional developer tools and utilities under Calculators
Calculate exact age in years, months, days, total weeks, and hours from your date of birth instantly.
Convert angle measurements between degrees, radians, and gradians instantly in your browser.
Calculate statistical mean, median, mode, range, and sum from dataset numbers instantly in your browser.
Calculate your Basal Metabolic Rate (BMR) using the revised Harris-Benedict equation instantly in your browser.
Calculate body fat percentage instantly using the U.S. Navy circumference method for men and women in your browser.
Calculate business working days between two dates excluding weekends instantly in your browser.
Convert capacitor values instantly between Picofarads (pF), Nanofarads (nF), Microfarads (µF), and 3-digit EIA codes.
Simulate and test complex eCommerce cart discount rules, coupon code stacking logic, and percentage vs. fixed tier discounts.
Calculate circle area, circumference, diameter, arc length, and sector area instantly in your browser.
Generate harmonious color palettes (monochromatic, complementary, analogous, triadic) instantly in your browser.
Calculate factorials (n!), permutations (nPr), and combinations (nCr) instantly in your browser.
Calculate compound interest growth, final investment balance, and total earnings over time instantly in your browser.
Convert cooking cups to milliliters (ml) and grams (g) for flour, sugar, water, and butter instantly in your browser.
Generate custom multi-currency conversion tables and grid matrix markup with customizable base rates instantly.
Convert data transfer rate and internet bandwidth units between Gbps, Mbps, Kbps, MB/s, and KB/s instantly in your browser.
Convert data transfer rates between Mbps, MB/s, Kbps, and Gbps instantly in your browser.
Find out which day of the week any historical or future date falls on instantly in your browser.
Convert Decibels (dB) to power and voltage gain ratios or calculate dB from gain factors instantly in your browser.
Calculate product discounts, final sale prices, and profit markup percentages instantly in your browser.
Calculate Euclidean distance, Manhattan distance, and midpoint between two Cartesian coordinates instantly in your browser.
Convert distance and length units between kilometers, meters, miles, feet, yards, and centimeters instantly in your browser.
Calculate file download times across different internet connection speeds (Mbps, MB/s) instantly.
Convert energy values between Joules, calories, kilocalories, and kilowatt-hours (kWh) instantly in your browser.
Convert mathematical fractions into decimals and decimals into simplified fractions instantly in your browser.
Calculate Greatest Common Divisor (GCD) and Least Common Multiple (LCM) for multiple numbers instantly in your browser.
Get current Unix timestamp in microsecond, nanosecond, millisecond, and second precision instantly with real-time updates.
Calculate ideal body weight using Devine, Robinson, and Miller formulas based on height and gender instantly.
Convert dates between ISO 8601 formats, Unix epoch timestamps, UTC, and localized date-time strings instantly in your browser.
Calculate the ISO 8601 week number, year, and day of the week for any selected date instantly in your browser.
Calculate monthly loan payments, total interest payable, and mortgage amortization schedules instantly.
Calculate logarithms for natural log (ln), base-10 (log10), and custom bases instantly in your browser.
Calculate Voltage, Current, Resistance, and Power instantly using Ohm's Law formulas in your browser.
Convert fluid ounces (fl oz) and weight ounces (oz) to milliliters (ml), liters, and grams instantly in your browser.
Calculate exact Stripe, PayPal, and merchant processing fees, effective rates, and net payouts across currency tiers instantly.
Calculate pixel-to-percentage layouts and proportional aspect ratios for web development instantly.
Convert power measurements between Watts (W), Kilowatts (kW), Megawatts (MW), and Horsepower (HP) instantly.
Convert pressure values between bar, PSI, atmospheres (atm), and Pascals (Pa/kPa) instantly in your browser.
Check if a number is prime and generate all prime numbers within a custom numeric range instantly.
Calculate right triangle hypotenuse or missing leg lengths instantly using the Pythagorean theorem (a² + b² = c²).
Solve quadratic equations (ax² + bx + c = 0) instantly, find real and complex roots, and view step-by-step discriminant calculations.
Scale recipe ingredients up or down easily by adjusting original and target serving sizes instantly in your browser.
Calculate resistor values and tolerances instantly by selecting 4-band or 5-band color codes in your browser.
Calculate Return on Investment (ROI), customer lifetime value (LTV), and revenue growth projections instantly.
Convert numbers between Roman numerals (e.g. MCMXCIV) and standard Arabic integers instantly.
Calculate Monthly Recurring Revenue (MRR), Annual Recurring Revenue (ARR), customer churn, and Lifetime Value (LTV) for SaaS businesses.
Perform advanced scientific calculations, trigonometric functions, logarithms, and powers instantly in your browser.
Calculate screen pixel density (PPI), total pixel count, and diagonal dimensions instantly for UI/UX and hardware design.
Convert speed measurements between kilometers per hour (km/h), miles per hour (mph), knots, and meters per second (m/s) instantly.
Convert US and metric tablespoons (tbsp) and teaspoons (tsp) to milliliters (ml) and fluid ounces instantly.
Convert digital storage units between Bytes, KB, MB, GB, TB, and PB instantly in your browser.
Calculate IPv4 subnet ranges, network addresses, broadcast IPs, netmasks, and total host counts instantly in your browser.
Calculate your Total Daily Energy Expenditure (TDEE) and calorie goals for cutting, bulking, or maintaining weight.
Convert temperatures instantly between Celsius, Fahrenheit, and Kelvin in your browser.
Convert temperature values seamlessly between Celsius (°C), Fahrenheit (°F), and Kelvin (K) instantly in your browser.
Calculate exact time duration in hours, minutes, seconds, and days between two timestamps instantly.
Calculate exact remaining days, hours, minutes, and seconds until any future target date and time instantly.
Calculate restaurant tips, split bills evenly among multiple people, and view per-person totals instantly.
Solve triangle side lengths, interior angles, perimeter, and area instantly using Side-Side-Side (SSS) or Side-Angle-Side (SAS).
Evaluate trigonometric functions (sin, cos, tan, csc, sec, cot) for degrees or radians instantly in your browser.
Calculate sales tax, VAT, gross price from net amount, and reverse tax amounts instantly in your browser.
Calculate output voltage (V_out) and current for resistor voltage divider circuits instantly in your browser.
Convert volume and liquid units between liters, milliliters, US gallons, fluid ounces, and cooking cups instantly.
Calculate your recommended daily water intake based on body weight, activity level, and climate instantly in your browser.
Convert weight and mass units between kilograms, grams, pounds, ounces, and milligrams instantly in your browser.
Calculate the exact number of working business days between two dates with customizable weekend days instantly in your browser.
Find your Western astrological zodiac sign, element, and symbol based on your birth date instantly in your browser.